"Yu-Gi-Oh Nightmare Troubladour" is a video game for the Nintendo DS based on the trading card game where you collect and battle cards. The Egyptian God cards are the most powerful cards in the Yu-Gi-Oh series and, as a consequence, they are extremely rare. Once you reach the sixth chapter in the game, by following a few simple steps you can add the three Egyptian God cards to your collection.
Begin part VI of the game and return to the first city to find Ishizu Ishtar with a three star rating. Talk to her and she will ask you a question.
Choose the “Power” option if you want Obelisk The Tormentor or choose “Unity” if you want Slifer the Sky Dragon.
Defeat Seto Kaiba and you will receive a Egyptian God card based on your answer to Ishizu’s question. Yami Yugi will get the card you did not choose.
Beat Yami Yugi with your Egyptian God card in your trunk. Once you are friends with him, you can trade with him for the card you did not choose. Now, you will have Obelisk and Slifer.
Obtain the Winged Dragon of Ra by trading with Marik after event X, the final event in the sixth chapter.